EP offers a complete range of modular servo gearboxes /worm reducers. The modular design permits configurations with motor input flange and end result pinion for rack and pinion drives, and also solid outcome shafts, Hollow bore productivity, and insight shafts for all the positioning applications. The modular design and style allows for general mounting of the gearbox in any orientation.
Servo-Worm Reducers were specifically developed for employ with the latest servo motors in applications that demand exact positioning and repeatability.
These reducers are ideal for applications in materials handling, automation, machine tool, and robotics.
The light weight modular aluminum housing design allows for easy machine integration, and excellent heat dissipation. A wide variety of type flanges and couplings are available to permit easy mounting of almost any servo-motor and custom made flanges can be accommodated. Result configurations with pinion, hollow bore, or stable shaft are available and will be configured for type with motor flange, free insight shaft, or both free input shaft and motor flange.
An optimized worm gear tooth design insures high efficiency while at exactly the same time decreasing backlash. Two levels of backlash can be found, Precise or Extra-precise, with backlash amounts to less than 3 arc minutes.
Available in 6 sizes
Ratios from 2 to 60:1
Torque Capability up to 4400 Lb.-Ft. (6000 Nm)
Input Speeds up to 6000 RPM
Two backlash amounts – Precise and Extra-precise.
Modular design compatible with rack & pinion system
4 input styles
7 output styles
28 possible standard configurations
Wide variety of servo gearboxes, designed to fit almost all servo motors found on the market
Designed for the best torsional stiffness and the lowest angular backlash, for the maximum torque and overhung loads
Bush with slot machines and hub clamp for servomotor coupling
Enhanced dimensional compactness due to direct servomotor coupling
Widest range of feasible servomotors coupling dimensions.
The correct technical solution because of a comprehensive range of sizes, gear stages, transmission ratios, designs and nonstandard designs.
High-Torque (HT) Servo-Worm Reducers
This standard selection of Servo-Worm Reducers are perfect for use in applications that demand high repeatability, performance and precise positioning. They were specifically developed for work with with state-of-the-art servo motor technology, providing limited integration of the motor to the unit. Angular backlash of less than 1 arc-moments is provided standard.
They are available in four sizes (50 mm to 100 mm center length) with input speeds up to 5,000 rpm, reduction ratios from 4.75 to 52:1 and output torque capacities up to 885 lb.ft. A broad range of electric motor couplings and mounting flanges are for sale to assembly to virtually all servo motors, and the hollow bore output can be utilized to mount outcome shafts, pinion shafts, or other drive elements.
Regular applications for these reducers include precision rotary axis drives, traveling gantries & columns, materials handling axis drives, zero-backlash axis drives and electronic line shafting. Industries served include Material H, ling, Automation, Robotics, Aerospace and Machine Tool.
Gearing: Internal gear style was optimized to provide an angular backlash of less than 1 arc-minutes in assembly, with the option of “in the field” adjustable backlash in the event necessary.
Bearings: Input angular get in touch with bearings for high suggestions speed, and robust outcome tapered-roller bearings for superior radial and axial load capability.
Housing: Aluminium housing for good heat dissipation, with integral type flange for servo motors and universal mounting on any face.
Output: The end result bore is available with a compression-type hub or a good ISO 9409-1 flange (see dimension webpages). We provide a line of extras to adapt these outputs to right shafting, Rack & Pinions, or other gearing types.
This gearbox utilizes a 30:1 ratio worm-travel reduction for applications that want extremely slow and smooth rotational motion. The worm-drive design not merely minimizes backlash but also eliminates back-traveling the gearmotor so a position can be placed even when power isn’t applied. The precision ground 3/8” stainless steel end result shaft is reinforced by dual 3/8” ABEC 5 ball bearings to support lots from any orientation. The ¼” ABS plastic and aluminum structure offers a rigid framework without adding unneeded weight and is conveniently mounted to any flat work surface by utilizing the base mounting tabs. Our Standard Spur Gear motors will work with this gearbox (motor distributed separately). The Vertical Shaft Worm-Drive Gearbox is simply perfect for turn-tables, time-lapse devices and low-quickness applications that want high precision and torque.
Motor RPM required = 1 / (mins per rotation desired / 30)
Example: 1 / (ten minutes per rotation / 30) = 3 RPM motor needed to achieve 10 minutes per rotation (at max speed)
now provides an economical right position gearhead for work with with small NEMA 23 through 56 and similar compact metric servo and stepper motors. These reducers are best suited for basic movement and input speeds of 2000 rpm where profile program costs certainly are a major consideration.
7 sizes with torque capacities up to 684 Nm
12 exact single stage ratios from 7:1 to 100:1
2 stage ratios available
Inch or metric outcome shafts
Hollow output standard, put in shafts optional
2D and 3D drawings available online
Flexible servo motor interface
Clamp-design hub provides zero-backlash engine shaft connection
Aluminum diecast casing for low weight
Large end result bearings accommodate larger radial loads
Inch or perhaps metric hollow bore with keyway, single and dual plug-in shafts also available
Double lip productivity seals provide maximum protection against contaminants
Face or base installation options, bolt on flanges and torque hands also available
Bronze wheels cast on the outcome shaft for higher strength
Hardened and surface worm shaft provides simple operation
Reducer completely sealed for universal mounting and long-life lubrication
Two bearing worm support isolates electric motor bearings from radial and axial loads
Flexible coupling element eliminates electric motor misalignment and bearing wear
Worm Gears are right angle drives providing large velocity ratios on comparatively short center distances from 1/4” to 11”. When effectively mounted and lubricated they function as the quietist and smoothest running type of gearing. Due to the high ratios practical with worm gearing, maximal speed reduction can be accomplished in less space than a great many other types of gearing. Worm and worm gears operate on non-intersecting shafts at 90° angles.
EFFICIENCY of worm equipment drives depends to a big level on the helix position of the worm. Multiple thread worms and gears with bigger helix angle prove 25% to 50% better than solo thread worms. The mesh or engagement of worms with worm gears creates a sliding action triggering considerable friction and increased loss of efficiency beyond other styles of gearing. The make use of hardened and ground worm swith bronze worm gears rises efficiency.
LUBRICATION can be an essential factor to boost efficiency in worm gearing. Worm equipment action generates considerable temperature, decreasing efficiency. The quantity of power transmitted at confirmed temperature increases as the efficiency of the gearing rises. Proper lubrication enhances efficiency by reducing friction and heat.
RATIOS of worm equipment sets are dependant on dividing the quantity of teeth in the apparatus by the number of threads. Thus one threads yield larger ratios than multiple threads. All EP. worm gear sets can be found with either left or right palm threads. EP. worm equipment sets are offered with Solo, Triple, Double and Qua-druple Threads.
Safe practices PROVISION: Worm gearing should not be used as a good locking mechanism to hold large weights where reversing actions could cause harm or personal injury. In applications where potential harm is non-existent and self-locking is desired against backward rotation then use of a single thread worm with a low helix angle quickly locks the worm gear travel against backward rotation.
MATERIAL recommended for worms is normally hardened steel and bronze for worm gears. However, depending on the application unhardened steel worms operate adequately and more economically with cast iron worm gears at 50% horsepower ratings. Furthermore to steel and hardenedsteel, worms can be purchased in bronze, stainless, nylon and aluminum; worm gears can be purchased in steel, hardened steel, stainless, light weight aluminum, nylon and non-metallic (phenolic).
EP also sells gear tooth measuring devices called GEAR GAGES! Gear Gages decrease mistakes, save money and time when identifying and ordering gears. These pitch templates can be purchased in nine sets to recognize all the typical pitch sizes: Diametral Pitch “DP”, Circular Pitch “CP”, External Involute Splines, Metric Module “MOD”, Stub Tooth, Fine Pitches, Coarse Pitches and Unusual Pitches. Make reference to the section on Equipment GAGES for catalog quantities when ordering.

Servo Worm Reducer info as well as myths.